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topology: Add element ID so we can look up references by name.

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Add support to lookup elements by name. This is in preparation for adding
some new API calls that will allow building topology data using a C API. This
will allow applications to build their own topology data directly.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jin Yao 2015-08-04 18:09:12 +01:00 • committed by Takashi Iwai
parent 1bb4c2fc30
commit 120b3b8ead
7 changed files with 24 additions and 18 deletions
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15
src/topology/elem.c
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@ -103,20 +103,27 @@ struct tplg_elem *tplg_elem_lookup(struct list_head *base, const char* id,
/* create a new common element and object */
struct tplg_elem* tplg_elem_new_common(snd_tplg_t *tplg,
snd_config_t *cfg, enum object_type type)
snd_config_t *cfg, const char *name, enum object_type type)
{
struct tplg_elem *elem;
const char *id;
int obj_size = 0;
void *obj;
if (!cfg && !name)
return NULL;
elem = tplg_elem_new();
if (!elem)
return NULL;
snd_config_get_id(cfg, &id);
strncpy(elem->id, id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
elem->id[SNDRV_CTL_ELEM_ID_NAME_MAXLEN - 1] = 0;
/* do we get name from cfg */
if (cfg) {
snd_config_get_id(cfg, &id);
elem_copy_text(elem->id, id, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
elem->id[SNDRV_CTL_ELEM_ID_NAME_MAXLEN - 1] = 0;
} else if (name != NULL)
elem_copy_text(elem->id, name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
switch (type) {
case OBJECT_TYPE_DATA: